2043453240 has 96 divisors (see below), whose sum is σ = 6651075600. Its totient is φ = 544112640.

The previous prime is 2043453233. The next prime is 2043453281. The reversal of 2043453240 is 423543402.

2043453240 is a `hidden beast` number, since 204 + 3 + 453 + 2 + 4 + 0 = 666.

It is a super-2 number, since 2×2043453240² = 8351402288132995200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262200 + ... + 269880.

Almost surely, 2^2043453240 is an apocalyptic number.

2043453240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2043453240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3325537800).

2043453240 is an abundant number, since it is smaller than the sum of its proper divisors (4607622360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2043453240 is a wasteful number, since it uses less digits than its factorization.

2043453240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8437 (or 8430 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 2043453240 is about 45204.5710078085. The cubic root of 2043453240 is about 1268.9803624843.

Adding to 2043453240 its reverse (423543402), we get a palindrome (2466996642).

The spelling of 2043453240 in words is "two billion, forty-three million, four hundred fifty-three thousand, two hundred forty".